/Engine/Source/Editor/GraphEditor/Public/SGraphNodeResizable.h
The resizable window zone the user is interacting with
enum EResizableWindowZone { CRWZ_NotInWindow = 0, CRWZ_InWindow = 1, CRWZ_RightBorder = 2, CRWZ_BottomBorder = 3, CRWZ_BottomRightBorder = 4, CRWZ_LeftBorder = 5, CRWZ_TopBorder = 6, CRWZ_TopLeftBorder = 7, CRWZ_TopRightBorder = 8, CRWZ_BottomLeftBorder = 9, CRWZ_TitleBar = 10, }